Nut-lock



M (NoMbdeL) G. S. WYNN.

NUT LOGK. V 6. No. 324,347. Patented Aug. 11, 1885.

II I i 1 l witnesses."

Z/ZW v Q J UNITED STATES PATENT ()EETCE.

GEORGE S. WVYNN, OF HUNTSVILLE, OHIO.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 324,347, dated August 11, 1885.

Application filed February 18, [885.

To all whom it may concern.-

Be it known that I, GEORGE S. WYNN, a citizen of the United States, and a resident of Huntsville, in the county of Logan and State of Ohio, have invented a new and useful Improvement in Nut-Locks, of which the following is a specification.

My invention consists in an improvement in nut-locks for fastening nuts securely on fishplates, bails, machinery, or wherever from joltin'g they are liable to work loose, and essertially in adapting it to utilizing bolts and nu s in present use.

Figure l is a side View ofmy device as used on a bolt, the rail or intervening body being omitted. Fig. 2 is a front view of my backing-plate B, the sides of which are square and adapted to fit against the rail or other object bolted to. Fig. 3 is a front view of my ratchet-plate that fits on the nut. Fig. 4 is a view of my spring-lock that engages with the face of my ratchet-plate and shoulder-I of my backing-plate.

A is a bolt; B, my backing-plate; C, an offset in raised rim B of said plate, in which plays a shoulder of my spring-lock; B, a rim cast on the plate B, inside of which my springlock is located; D, a ratchet-collar that fits on the nut-head, the countersink being square, hectagonal, or other shape to fit the head of bolt to be used; E, countersink for reception of the end of the nut-head; F, spring-lock; F, thumbpiece projecting from top of sameto operate it by; G, projecting end of springlock F; H, shoulder on thumb-piece that engages with shoulder I of the cut-away portion B; K, alip to keep the bottom of spring-lock F in position.

The object of my invention is to provide a nut lock that shall prevent nuts jolting loose from exposed placessuch as in the various uses on rails of railroads, and in machinery where they are exposed to shaking or jolting motion. For this purpose I have devised a lock and accessories that 'allow of the retention of the nuts and bolts in present use. For this purpose I furnish a backing-plate, B, adapted to set squarely against the rail, and having squared edges adapted to fit against the shoulders of fish-plates or other projections, so as to prevent turning, and also. having small lugs to engage with. depressions in (No model.)

plane surfaces, and also being of material that can readily be made to overlap adjacent edges and hold the plate from turning. This backing -plate is made with squared projecting edges, as shown in Fig. 1, that rest against any shoulder or the flange of a rail or fish-plate.

. The back of it is p1 ovided with small projections L, adapted to set into depressions made in the rail or other structure with a punch or otherwise to keep the plate from turning. This backing-plate is made of malleable iron, and the four corners project in such manner that when the bolt passes through a narrow piece the corners can be bent down over the edge with a blow of a hammer. The plate can be set so as to bend the corners down on parallel sides, or so as to bend the diagonally-opposite corners down.

In many places in machineryasmall shoulder can be cast on the same for the edges of the backing-plate to abut against.

Inside of the rim B of my backing-plate is my spring-lock F. (Shown in Fig. 4.) The thumb-piece F, projects up through the cutaway portion 0 in the rim B. ping part of spring-lock F is given a twist or turn, so that the end G shall project beyond the face of the plate, while the back H of the thumb-piece F shall engage with the shoulders H of the rim B, as shown in Fig. 1.

By making the hole K in face-plate B square,

The overlapit will be adapted to use with journals having corresponding squared sides.

I also furnish face-plate D, having on one side a collar or countersunk part, adapted to fit snugly on the head of the nut, and on the other side a ratchet-face, as shown.

The operation is as follows: The backingplate B is set securely on the rail or other piece, to be attached to and secured from turning by one of the means mentioned, and the spring-lock F inserted inside the rim B. The bolt is passed through. The face-plateD is then secured on the nut and the nut run up tight against the backing-plate B. The front end, G, of the spring-lock F engages in one of the teeth of the ratchet-face, while the shoulder H of the thumb-piece F engages with the shoulder I of the cutaway portion of rim B.

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3, having prqieetions L thereon to prevent it C, and spring F, and the plate 1), having teeth turning, the plate 1), adapted to it 011 the nut D, and countersink 0r collar E, as and for the :1 ml having the rutehetface D, and the springpurpose set forth. I lock F, having shoulders G and H, snhsl'uu- GEORGE S. VVYNN. 5 tin/11y as set forth. Attest:

2. The combination, with an ordinary bolt H. H. G001), and nut, of the plate 13, rim B, having ofiIset W'ILL MCCORMICK. 

